639443854

素因数分解:

$2^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{241}}^1\times {\mathrm{2399}}^1$

素因数の和:2728

約数の個数: 32

約数和(自身を含む): 1115136000

約数和(自身を除く): 475692146

約数列:

[1, 2, 7, 14, 79, 158, 241, 482, 553, 1106, 1687, 2399, 3374, 4798, 16793, 19039, 33586, 38078, 133273, 189521, 266546, 379042, 578159, 1156318, 1326647, 2653294, 4047113, 8094226, 45674561, 91349122, 319721927, 639443854]

約数ペア:

[(1, 639443854), (2, 319721927), (7, 91349122), (14, 45674561), (79, 8094226), (158, 4047113), (241, 2653294), (482, 1326647), (553, 1156318), (1106, 578159), (1687, 379042), (2399, 266546), (3374, 189521), (4798, 133273), (16793, 38078), (19039, 33586)]